go.mod: update from HEAD.

Also increment build number to skip over the 1.16.0 release build.

android/build.gradle

@@ -25,7 +25,7 @@ android {
     defaultConfig {
         minSdkVersion 22
         targetSdkVersion 30
-        versionCode 69
+        versionCode 70
         versionName "1.15.210-tbabd163aa-g9b52c6b357b"
     }
 	compileOptions {

go.mod

@@ -10,7 +10,7 @@ require (
 	golang.org/x/sys v0.0.0-20210906170528-6f6e22806c34
 	golang.zx2c4.com/wireguard v0.0.0-20210905140043-2ef39d47540c
 	inet.af/netaddr v0.0.0-20210721214506-ce7a8ad02cc1
-	tailscale.com v1.1.1-0.20211008004653-1f506d23514a
+	tailscale.com v1.1.1-0.20211008163715-e5dddb2b9928
 )
 
 require (

go.sum

@@ -1015,3 +1015,5 @@ tailscale.com v1.1.1-0.20211005220235-67e5fabdbdba h1:szGUzQIThyKAKJDxXuL5lgUmEU
 tailscale.com v1.1.1-0.20211005220235-67e5fabdbdba/go.mod h1:2ordBMiDa1Gx6r8ci5EtSS3Wl0RanS46+l8T2vwqUtI=
 tailscale.com v1.1.1-0.20211008004653-1f506d23514a h1:htyjSQ+1+YeW+aapSMq8hlCPk+dJlkbWvIuWIVgbWP4=
 tailscale.com v1.1.1-0.20211008004653-1f506d23514a/go.mod h1:+dISSbd6iiY6F6/dRGQRgshjYXMkhMzVvRd9En8RLfQ=
+tailscale.com v1.1.1-0.20211008163715-e5dddb2b9928 h1:0d48ymcsb+yT7cHqA9OC8+CioFOCsVKXxyhBQ545MkE=
+tailscale.com v1.1.1-0.20211008163715-e5dddb2b9928/go.mod h1:+dISSbd6iiY6F6/dRGQRgshjYXMkhMzVvRd9En8RLfQ=